The single-engine airplane was blown over by the jet blast of a departing twin-turbine powered airliner while taxiing. The single-engine airplane had been instructed by the ATC ground controller to taxi to a parking area via a taxiway that crossed behind the waiting airliner. Meanwhile, the scheduled airliner was issued a takeoff clearance. As the airliner powered up to enter the active runway for departure, the jet blast rolled the single-engine airplane over to an inverted position. The private pilot and passenger were able to exit the airplane unassisted. The single-engine airplane's right wing sustained structural damage. The airliner, unaware of what had occurred, departed the airport. According to the Aeronautical Information Manual, chapter 7, paragraph 7-3-8 a, "...the flight disciplines necessary to ensure vortex avoidance during VFR operations must be exercised by the pilot." According to FAA order 7110.65R, ground controllers are to "Use caution when taxiing smaller aircraft/helicopters in the vicinity of larger aircraft."